三种絮凝剂在微藻收获中的研究  

Three Kinds of Flocculants on Microalgae Harvesting

作　　者：陈晓燕[1] 林向阳[1] 王静[1] 沈英[2] 阮榕生[1,3] 刘明华[4] 

机构地区：[1]福州大学生物科学与工程学院,福建福州350108 [2]福州大学机械工程及自动化学院,福建福州350108 [3]明尼苏达大学生态系统与农业工程系,美国明尼苏达圣保罗55108 [4]福州大学环境与资源学院,福建福州350108

出　　处：《农产品加工（下）》2015年第2期4-8,共5页Farm Products Processing

基　　金：863项目(2012AA021704);国家自然科学基金项目(51108085)

摘　　要：微藻收获技术的研究对微藻的开发与利用有着重大的发展意义,其中絮凝法是众多收获技术中的一种。在明矾、壳聚糖、阳离子淀粉絮凝剂(CSF)最优絮凝条件的基础上,絮凝处于稳定期的斜生栅藻,分别从最佳絮凝剂用量、最小絮凝时间、p H值对其影响程度、絮凝微藻的浓缩因子、微藻培养液中微藻有机物(Algae organic matter,AOM)对其影响程度等方面进行比较。结果表明,壳聚糖所需剂量最少,为40 mg/L,CSF 60 mg/L,明矾200 mg/L;壳聚糖所需最短的絮凝时间为15 min,CSF为20 min;CSF对溶液酸碱度的适应性更强,絮凝特性更稳定;AOM对壳聚糖抑制最为显著。从絮凝效果、经济成本和环境友好度3个方面综合比较,CSF均具有明显的优势。The research of the technology of microalgae harvesting is significant to the development and use of microalgae, and flocculation is one of the various technologies of harvesting. Under the optimum flocculation condition of alum, chitosan and cationic starch flocculants, flocculating Scenedesmus Obliquus which are in a stable phase. Respectively, the study compare the optimum flocculation dosage, the minimum flocculmion time, the influence of pH, the concentration factor of microalgae flocculating, the influence of the algae organic matter （AOM） . The results show that the required dosage of chitosan is least （40 mg/L）, the required dosage of CSF is 60 mg/L, the required dosage of alum is 200 mg/L. The shortest flocculation time of chitosan 15 min, and CSF 20 rain. The solution pH adaptability of CSF is strongest, the flocculation characteristics of CSF is most stable. The inhibition of AOM to chitosan is most significant. Taking flocculation efficiency, economic cost and environmental friendliness into account, CFS has major advantages.

关 键 词：明矾 壳聚糖 阳离子淀粉 微藻收获 斜生栅藻 

分 类 号：TS254[轻工技术与工程—水产品加工及贮藏工程]